/*
 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
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 *
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 *
 *
 *
 *
 */

package javax.swing.plaf.metal;

import sun.swing.SwingUtilities2;
import sun.awt.AppContext;

import javax.swing.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.*;


import java.awt.*;


/**
 * A Windows L&amp;F implementation of LabelUI.  This implementation
 * is completely static, i.e. there's only one UIView implementation
 * that's shared by all JLabel objects.
 *
 * @author Hans Muller
 */

public class MetalLabelUI extends BasicLabelUI {

  /**
   * The default <code>MetalLabelUI</code> instance. This field might
   * not be used. To change the default instance use a subclass which
   * overrides the <code>createUI</code> method, and place that class
   * name in defaults table under the key "LabelUI".
   */
  protected static MetalLabelUI metalLabelUI = new MetalLabelUI();

  private static final Object METAL_LABEL_UI_KEY = new Object();

  public static ComponentUI createUI(JComponent c) {
    if (System.getSecurityManager() != null) {
      AppContext appContext = AppContext.getAppContext();
      MetalLabelUI safeMetalLabelUI =
          (MetalLabelUI) appContext.get(METAL_LABEL_UI_KEY);
      if (safeMetalLabelUI == null) {
        safeMetalLabelUI = new MetalLabelUI();
        appContext.put(METAL_LABEL_UI_KEY, safeMetalLabelUI);
      }
      return safeMetalLabelUI;
    }
    return metalLabelUI;
  }

  /**
   * Just paint the text gray (Label.disabledForeground) rather than
   * in the labels foreground color.
   *
   * @see #paint
   * @see #paintEnabledText
   */
  protected void paintDisabledText(JLabel l, Graphics g, String s, int textX, int textY) {
    int mnemIndex = l.getDisplayedMnemonicIndex();
    g.setColor(UIManager.getColor("Label.disabledForeground"));
    SwingUtilities2.drawStringUnderlineCharAt(l, g, s, mnemIndex,
        textX, textY);
  }
}
